UCC28512DW Datasheet PDF - TI

●DESCRIPTION

●The UCC28510 series of combination PFC/PWM controllers provide complete control functionality for any off-line power system requiring compliance with the EC1000−3−2 harmonic

●reduction requirements. By combining the control and drive signals for the PFC and the PWM stages into a single device, significant performance and cost benefits are gained. By managing the modulation mechanisms of the two stages (leading-edge modulation for PFC and

●trailing-edge modulation for PWM), the ripple current in the boost capacitor is minimized.

●FEATURES

●Provides Control of PFC and PWM Power

●Stages In One Device

●Leading-Edge PFC, Trailing-Edge PWM

●Modulation for Reduced Ripple

●Built-In Sequencing of PFC and PWM

●Turn-On

●2-A Source and 3-A Sink Gate Drive for Both

●PFC and PWM Stages

●Typical 16-ns Rise Time and 7-ns Fall Time

●into 1-nF Loads

●PFC Features

●− Average-Current-Mode Control for

●Continuous Conduction Mode Operation

●− Highly-Linear Multiplier for Near-Unity

●Power Factor

●− Input Voltage Feedforward Implementation

●− Improved Load Transient Response

●− Accurate Power Limiting

●− Zero Power Detect

●PWM Features

●− Peak-Current-Mode Control Operation

●− 1:1 or 1:2 PFC:PWM Frequency Options

●− Programmable maximum duty cycle

●− Programmable Soft-Start

●− Two Hysteresis Options for Differing

●Hold-Up Time Requirements